  Antiretroviral Treatments for HAD Questions that remain unanswered:  & nbsp;  • Do antiretroviral agents penetrate the blood- brain barrier sufficiently to adequately suppress viral replication in the CNS?
 • Does HAART prevent prevent ongoing brain injury due to HIV?  Antiretroviral Medicationswith Effective CNS Penetration • Nucleoside Reverse Transcriptase Inhibitors ( NRTI)  &
nbsp; nbsp; nbsp; nbsp; nbsp; nbsp;
nbsp; nbsp; nbsp; nbsp; nbsp; nbsp;
nbsp;  - e. g.  zidovudine,  stavudine,
 & nbsp; nbsp; nbsp;  & nbsp;
nbsp; nbsp; nbsp; nbsp; nbsp; nbsp;
nbsp; nbsp; nbsp; nbsp; nbsp; nbsp;
nbsp; nbsp; nbsp; nbsp; nbsp; nbsp;
nbsp;  & nbsp; lamivudine • Non- Nucleoside RTI (
NNRTI)  & nbsp; nbsp; nbsp; nbsp;
nbsp; nbsp; nbsp; nbsp; nbsp; nbsp;
nbsp; nbsp; nbsp;  - e. g.
 nevirapine • Protease Inhibitors ( PI)  & nbsp; nbsp;
nbsp; nbsp; nbsp; nbsp; nbsp; nbsp;
nbsp; nbsp; nbsp; nbsp; nbsp;  -
e. g.  indinavir 
